For emulators like PCSX2 , you must extract the file first to get the .iso or .bin disc image.

Encrypts your data and demands payment for a decryption key.

If you have files named TRG.7z.001 , TRG.7z.002 , etc., highlight all parts, right-click the first one, and choose "Combine Files" or "Extract" to merge them. ⚠️ Security Warning: TRG Ransomware

Some emulators, like RetroArch , can read games directly from a .7z file.

If your file is part of a "ROM set" (common in retro gaming circles):